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    Beat Frequency In Sound Pipes With Temperature Changes

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    Two pipes, equal in length, are each open at one end. Each has a fundamental frequency of 479 Hz at 18 C. In one pipe the air temperature is increased to 21 C. If the two pipes are sounded together, what beat frequency results?

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    Solution Preview

    Frequency is given by

    f = velocity / wavelength

    velocity of sound is dependent on temperature. It is given by

    v = 331+0.6T .

    Let V1 = 331 + ...

    Solution Summary

    The beat frequency in sound pipes with temperature changes are examined. The fundamental frequency is examined.